问题
I have a small bug in my application that only exists when building with Xcode 6. I fixed this bug, but then this part is bugged when building with Xcode 5. So there is an ugly battle between the two Xcode versions..
Now.. I want to check which Xcode version is being used to build the project via a preprocessor. Is this possible to do so? If so, this would fix my problem really fast.
来源：https://stackoverflow.com/questions/28765740/xcode-version-preprocessor